refactor: Use clap's built-in version command

[xosnrdev]

closes #1144

Before:

/target/debug/goose -v
                                                                               
1.0.4

After:

./target/debug/goose -V                                                   

goose-cli 1.0.4

[salman1993]

this is cleaner! i'd prefer not to show the goose-cli prefix

[xosnrdev]

this is cleaner! i'd prefer not to show the goose-cli prefix

Resolved.

./target/debug/goose -h                                                             
An AI agent

Usage: goose [COMMAND]

Commands:
  configure  Configure Goose settings
  mcp        Run one of the mcp servers bundled with goose
  session    Start or resume interactive chat sessions [aliases: s]
  run        Execute commands from an instruction file or stdin
  agents     List available agent versions
  help       Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

./target/debug/goose -V                  
 1.0.5

[salman1993]

thanks for contributing! 🙏🏼